Patents

July 5, 1985|By Deanne Brandon

ETERNAL LIGHT. DioLight Technology said it had been awarded a patent for production of a light bulb that burns for 60,000 to 80,000 hours. Comparison: A conventional bulb burns for 750 hours. DioLight, based in Pontiac, Mich., said its ''Forever'' bulb has a built-in diode that converts alternating current to direct current. The result: Less heat and vibration. The company said it is marketing the bulb to General Motors Corp., Tandy Corp. and General Electric Co. -- and ''can barely keep up with demand.''